Pushing and pulling implement



Feb. 6, 1934. e, A. COUNTRYMAN PUSHING AND PULLING IMPLEMENT Filed April20, 1932 2 Shee'tS-Sheet 1 R O T w H m m w P. H v! U E ATTORNEY Feb. 6,1934. e. A. COUNTRYMAN 1,946,352

PUSHING AND PULLING IMPLEMENT Filed April 20, 1932 2 Sheets-Sheet 2 Mi n1 Jinan-mu mmmnm mflnmmwnmm INVENTOR' GUY HZ'OUNTRYNHN ATTORNEY PatentedFeb. 6, 1934 UNITED STATES PATENT OFFICE lclaim.

This invention pertains to an improvement in pushing and pullingimplements, and more particularly to a repair tool or implement to beused in reshaping damaged automobiles. It is the principal object of theinvention to provide a device of the above mentioned character, adaptedto be used for reshaping the dented body of an automobile andstraightening the twisted frame, particularly the bent front and rearhorns thereof.

Generally considered, the invention comprises a relatively short mainbody portion in the form of a lifting jack, adapted to impart pushingand pulling forces to screw threaded extensions connected to and inaxial alinement with therelatively movable parts of the jack.

It is a more specific object of this invention to provide a device ofthe above mentioned character wherein the coacting extensions are ofimproved construction and so mounted on the main jack that they can beconveniently interchanged, thus adapting the tool to the particularrepair job desired.

Other objects, as well as the nature, characteristic features and scopeof this invention will be more readily apparent from the followingdescription taken in connection with the accompanying drawings andpointed out in the claim, forming a part of this specification.

In the drawings:

Figure 1 is a side elevation of the bent front horn of an automobileshowing the repair tool applied in operative position;

Figure 2 is a sectional view on line 2-2 of Figure 1;

Figure 3 is a sectional view on line 33 of Figure 1;

Figures 4, 5, 6 show sectional views of the individual parts of the toolshown in Figure 1;

Figure 7 is a side elevation of the tool shown in Figure 1 provided withextensions of special length and shape, including an extensible memberto adapt the tool to body reshaping work;

Figure 8 is a longitudinal sectional view through the tool shown inFigure 7;

Figure 9 is an enlarged detail view of the ratchet mechanism of the mainjack operating means; and

Figure 10 is an enlarged sectional view of the interlocking means forthe members of the extensible member or extension of the tool shown inFigure '1.

Similar characters of reference are employed in all of the abovedescribed views, to indicate corresponding parts.

Referring now more particularly to the accompanying drawings, and withspecial reference to Figures 1 to 6 inclusive, A denotes a main jackmember or portion of familiar design, comprising a hollow casing or base2 and a screw mem- 00 her 3, slidably mounted within the casing but heldagainst rotary movement by means of a key 4, the ends of which travel ingrooves 5. Threadedly mounted upon the screw member 3, and housed withinthe bulged or chambered portion 6 of the o5 casing 2 is a nut 7, formedwith bevel teeth '7'. As the nut 'l is confined between the opposingwalls 88' of the chambered portion of the casing against relativelongitudinal movement on the screw member 3, rotation of the nut causes10 member 3 to slide either in or out with respect to the casing,according to the direction of rotation of the nut. A bevel gear 9mounted on stud shaft 10, and in mesh with the teeth 7' of nut 7, isprovided with an operating crank 11, for rapid rotation of gear and nut,while a ratchet lever 12 also mounted on stud shaft 10 is used by theoperator where a more powerful and step by step rotation of gear and nutis desired during spreading operations. A pawl 13 pivotally mounted onlever 60 12, as at 14, is normally held in operative engagement with theteeth of gear 9 by means of a spring 14'.

The jack member A is provided with coupling members or extensions 15 and16 at its opposite 86 ends for respectively connecting the ends of thedevice with the horn or end 17 of an automobile frame 18 and the springsupporting shackle 19 depending from the frame. Extension 15, preferablyof tubular form, is exteriorly threaded at 20 for engagement with theinternally screw threaded end 21 of the jack, whereas the extension 16is interiorly threaded at one end 22 for engagement with the outerenlarged threaded end 23 of screw member 3. The coupling extensionmembers 16 and 15 are pivotally supported by bolts 24 and 25 whichconnect these parts to the frame end 1'7 and spring supporting shackle19 respectively, which bolts pass through perforations 2'! formed in thecoupling extension members for this purpose.

The tool just described is particularly adapted for reshaping the benthorns of automobile frames, it merely being necessary for the operatorto attach the tool between the spring supporting connections of theframe and the horn, and thereafter extend or spread the tool by theoperation of jack A.

Where the tool is to be used for straightening bers 15 and 16 areunscrewed, and other members or somewhat different form substituted,such as shown in Figures '7, 8 and 10. In these figures an elongatedtubular extension 28 screwed into the base end 17 of jack A carries atits free end a readily detachable V-shaped interchangeable head 29, andconnected to screw member 3 by means of a coupling 30, is a screw rodmember or extension 31. slidably mounted for relative longitudinalmovement on the screw member 31 is a headed sleeve 32, which sleevesover the member 31, and is fixed at its inner end to a clutch or ratchethousing 33, also longitudinally movable on screw member 31. Rotation ofthe sleeve 32 and housing 33 is prevented by means of a key 34,extending from a wall of the housing into a key way 35, in screw member31;

A pair of oppositely disposed threaded clutch or ratchet-lever members36 and 37 pivotally mounted on pins 38 and 39 extending through housing33, serve to operatively connect the screw member 31, sleeve 32 andhousing 33 together. The free ends of members 36 and 37 extend inopposite directions longitudinally of screw member 31, and their toothedinner faces 40 and 41 are pressed to interlocking engagement with thethreads of member 31 by springs 42 and 43. Handles 44 and 45 secured tothe free ends of the pawl members and extending outwardly through slots46-47 in the housing permit of one or both of the ratchet members 3637being manually rocked out of engagement with the member 31. As theseratchet members are mounted to pivot in opposite directions, it will beseen that each member will lock the sleeve 32 against longitudinalmovement in one direction, while permitting free movement thereof in theopposite direction. Thus, when ratchet member 3'! is manually moved onits pivot 39 to disengaged position, the sleeve 32 can be freely shiftedin the direction of or toward jack member A, but will be locked againstmovement in an opposite direction by ratchet lever 36. Conversely whenthe lever 36 is disengaged from screw 31 by manually rocking the formeron its pivot 38, the sleeve 32 can be moved in a direction away from thejack, but not toward the jack. It will thus be seen that the clutchmechanism enables the operator to quickly adjust the tool to any desiredlength, whereupon the main jack portion A may be operated in the mannerpreviously described.

Having thus described my invention what I claim is:

In an automobile repair tool provided with an axially extended jackportion adapted to be used as an individual jack, an extension embodyinga screw rod and a sleeve member slidably and nonrotatably interengagedwith each other, and coupling means for said rod and sleeve memberprovided with oppositely arranged locking ratchet members in engagementwith the threads of said rod for quick adjustment of said sleeve withrespect to said screw rod, said ratchet members having their ratchetlevers arranged to lock said sleeve member against movement in oppositedirections, to promote quick adjustment of said sleeve member in eitherdirection by actuation of one or the other one of said ratchet levers.

GUY A. COUNTRYMAN.

